People · China
Zaiyuan Chu (初载源)
2×2 · top 2.2% of 189,179 all-time · competing since December 2017 · 2017CHUZ01
Zaiyuan Chu (初载源) has been competing for 9 years. His best event is the 2×2: a personal-best single of 1.50, set at Shandong Open 2019, puts him in the top 2.2% of the 189,179 people who have ever been ranked in the event, and 257th in China. Until November 2008, no official 2×2 solve in the world had been that fast. Across 11 competitions since December 2017, he has put 332 official solves on the record across six events. Solve to solve, his 3×3 times vary about 14% around a typical one; 77% of the 36,406 competitors with ten or more counted rounds hold a tighter spread. His 2×2 best has come down from 5.04 in December 2017 to 1.50, a 70% improvement. Zaiyuan has entered eleven competitions, more competitions than 93% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | China | |
|---|---|---|---|---|---|
| 2×2 | 1.50 | 2.50 | top 2.2% | 257 / 15,939 | |
| 3×3 | 9.14 | 10.78 | top 5.2% | 2,028 / 28,499 | |
| Pyraminx | 3.65 | 5.64 | top 6.1% | 736 / 10,269 | |
| 3×3 one-handed | 17.35 | 25.50 | top 13.5% | 1,367 / 5,994 | |
| 4×4 | 46.25 | 52.24 | top 19.9% | 2,188 / 5,999 | |
| Skewb | 5.81 | 11.96 | top 24.4% | 1,522 / 5,030 |
Percentile against all competitors ever ranked in each event, a fairer measure than raw rank, because the pools differ by a factor of ten.
The line so far
Best single per competition, 2×2. Faster is higher — the axis is the right way up.
The story so far
- 21 Jul 2019First sub-10 3×3: 9.83 at Heze Open 2019.
- 21 Jul 2019Three personal bests in one day at Heze Open 2019.
- 2 Oct 2018Three personal bests in one day at China Championship 2018.
- 10 Jun 2018Four personal bests in one day at Shijiazhuang Open 2018.
- 22 Apr 2018First sub-15 3×3: 13.95 at Qinhuangdao Open 2018.
- 22 Apr 2018Four personal bests in one day at Qinhuangdao Open 2018.
Competitions
- Zibo Open 2019 · 17 Nov 2019
- Shandong Open 2019 · 4 Oct 2019 — 2 personal bests set
- Heze Open 2019 · 21 Jul 2019 — 3 personal bests set
- Qingdao Spring 2019 · 31 Mar 2019 — 2 personal bests set
- Zibo Open 2018 · 1 Dec 2018
- China Championship 2018 · 2 Oct 2018 — 3 personal bests set
- Shijiazhuang Open 2018 · 10 Jun 2018 — 4 personal bests set
- Weihai Open 2018 · 12 May 2018 — 1 personal best set
- Qinhuangdao Open 2018 · 22 Apr 2018 — 4 personal bests set
- Qingdao Open 2018 · 25 Mar 2018 — 4 personal bests set
- Zibo Open 2017 · 23 Dec 2017
Reading this page: a single is one solve's time · an average is the middle three of five solves, best and worst discarded · a PB is a personal best · a DNF (did not finish) is an attempt with no valid result: a popped piece, an unsolved face, an over-limit memorisation · top X% compares against everyone ever ranked in that event, which is fairer than raw rank because event pools differ tenfold.
The circuit
The people whose scorecards keep turning up next to his.
- Zhenyu Wang (王振宇) — met in 36 rounds, finished ahead 8 times
- Chenghao Guo (国成浩) — met in 34 rounds, finished ahead 21 times
- Minghan Li (李明瀚) — met in 33 rounds, finished ahead 27 times
Next targets
- A sub-1 2×2 single — 1,050 people have one; it is 0.50 away.
- A sub-8 3×3 single — 8,101 people have one; it is 1.14 away.
Targets move as he improves.